Sea-Monster is the rendering in La 4:3 of the Heb. תַּן, tan, where the margin has "sea-calves." The root of the word is תָּנַן, tandin, "to stretch out," hence it seems to apply to a slim creature that extends itself, and some think it to mean a kind of serpent. Others would render it "jackal" It is variously rendered in the A. V. ("whale," "serpent,' etc.), nor is it probable that it was very definite ha its application. SEE DRAGON.